package com.itheima.reggie_1.controller;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.itheima.reggie_1.common.R;
import com.itheima.reggie_1.entity.Employee;
import com.itheima.reggie_1.service.EmployeeService;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.util.DigestUtils;
import org.springframework.web.bind.annotation.*;

import javax.servlet.http.HttpServletRequest;

@Slf4j
@RestController
@RequestMapping("/employee")
public class EmployeeController {
    @Autowired
    private EmployeeService employeeService;

    /**
     * 员工登录
     * @param request
     * @param employee
     * @return
     */
    @PostMapping("/login")
    public R<Employee> login(HttpServletRequest request,@RequestBody Employee employee) {
//        1.获取界面提交的密码password进行md5加密处理
        String password = employee.getPassword();
        password = DigestUtils.md5DigestAsHex(password.getBytes());
//        2.查询数据库页面提交的用户名是否存在
        LambdaQueryWrapper<Employee> queryWrapper = new LambdaQueryWrapper<>();
        queryWrapper.eq(Employee::getUsername,employee.getUsername());
        Employee emp = employeeService.getOne(queryWrapper);
//        3.判断用户名是否存在,如果不对则返回登录失败
        if (emp == null) {
            return R.error("登录失败 用户不存在");
        }
//        4.对比密码是否正确,如果不对则返回登录失败
        if (!emp.getPassword().equals(password)) {
            return R.error("登录失败 密码错误");
        }
//        5.查看用户状态,是否为已禁用,若为禁用则返回员工已禁用
        if (emp.getStatus() == 0) {
            return R.error("员工已禁用");
        }
//        6.登陆成功,将员工id储存到Session对象中
        request.getSession().setAttribute("employee",emp.getId());
        return R.success(emp);
    }

    /**
     * 员工退出
     * @param request
     * @return
     */
    @PostMapping("/logout")
    public R<String> logout(HttpServletRequest request) {
//        将员工数据从Session中清除
        request.getSession().removeAttribute("employee");
        return R.success("退出成功");
    }

    /**
     * 添加员工
     * @param request
     * @param employee
     * @return
     */
    @PostMapping
    public R<String> save(HttpServletRequest request,@RequestBody Employee employee) {
        log.info("新增员工信息: {}",employee.toString());
//        设置初始密码123456,需要进行md5加密处理
        employee.setPassword(DigestUtils.md5DigestAsHex("123456".getBytes()));
//        设置账户创建和修改时间
//        employee.setCreateTime(LocalDateTime.now());
//        employee.setUpdateTime(LocalDateTime.now());
////        获取当前登录用户id
//        Long empId = (Long) request.getSession().getAttribute("employee");
//        employee.setCreateUser(empId);
////        设置用户最后修改人
//        employee.setUpdateUser(empId);
//        调用方法添加到数据库中
        employeeService.save(employee);
        return R.success("新增员工成功");
    }

    /**
     * 员工信息分页查询
     * @param page
     * @param pageSize
     * @param name
     * @return
     */
    @GetMapping("/page")
    public R<Page> page(int page, int pageSize, String name) {
        log.info("page = {},pageSize = {},name = {}",page,pageSize,name);
//        构造分页构造器
        Page pageInfo = new Page(page, pageSize);
//        构造条件构造器
        LambdaQueryWrapper<Employee> queryWrapper = new LambdaQueryWrapper<>();
//        添加过滤条件
        queryWrapper.like(StringUtils.isNotEmpty(name),Employee::getName,name);
//        添加排序条件
        queryWrapper.orderByDesc(Employee::getUpdateTime);
//        执行查询
        employeeService.page(pageInfo,queryWrapper);
        return R.success(pageInfo);
    }

    /**
     * 根据id修改员工信息
     * @param employee
     * @return
     */
    @PutMapping
    public R<String> update(HttpServletRequest request,@RequestBody Employee employee) {
        log.info(employee.toString());
//        获取当前修改员工id
//        Long empId = (Long) request.getSession().getAttribute("employee");
//        设置员工最后修改时间
//        employee.setUpdateTime(LocalDateTime.now());
//        设置最后修改的员工
//        employee.setUpdateUser(empId);
//        调用修改方法
        employeeService.updateById(employee);
        return R.success("员工信息修改成功");
    }

    /**
     * 根据id查询员工信息
     * @param id
     * @return
     */
    @GetMapping("/{id}")
    public R<Employee> getById(@PathVariable Long id) {
        log.info("根据id查询员工信息...");
        Employee employee = employeeService.getById(id);
        return R.success(employee);
    }
}
